1605 lines
40 KiB
Go
1605 lines
40 KiB
Go
package docker
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import (
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"archive/tar"
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"bytes"
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"encoding/json"
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"flag"
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"fmt"
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"github.com/dotcloud/docker/auth"
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"github.com/dotcloud/docker/term"
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"github.com/dotcloud/docker/utils"
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"io"
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"io/ioutil"
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"net"
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"net/http"
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"net/http/httputil"
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"net/url"
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"os"
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"os/signal"
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"path/filepath"
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"reflect"
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"regexp"
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"strconv"
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"strings"
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"syscall"
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"text/tabwriter"
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"time"
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"unicode"
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)
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const VERSION = "0.4.8"
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var (
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GITCOMMIT string
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)
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func (cli *DockerCli) getMethod(name string) (reflect.Method, bool) {
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methodName := "Cmd" + strings.ToUpper(name[:1]) + strings.ToLower(name[1:])
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return reflect.TypeOf(cli).MethodByName(methodName)
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}
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func ParseCommands(proto, addr string, args ...string) error {
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cli := NewDockerCli(os.Stdin, os.Stdout, os.Stderr, proto, addr)
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if len(args) > 0 {
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method, exists := cli.getMethod(args[0])
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if !exists {
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fmt.Println("Error: Command not found:", args[0])
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return cli.CmdHelp(args[1:]...)
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}
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ret := method.Func.CallSlice([]reflect.Value{
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reflect.ValueOf(cli),
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reflect.ValueOf(args[1:]),
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})[0].Interface()
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if ret == nil {
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return nil
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}
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return ret.(error)
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}
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return cli.CmdHelp(args...)
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}
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func (cli *DockerCli) CmdHelp(args ...string) error {
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if len(args) > 0 {
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method, exists := cli.getMethod(args[0])
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if !exists {
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fmt.Fprintf(cli.err, "Error: Command not found: %s\n", args[0])
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} else {
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method.Func.CallSlice([]reflect.Value{
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reflect.ValueOf(cli),
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reflect.ValueOf([]string{"--help"}),
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})[0].Interface()
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return nil
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}
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}
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help := fmt.Sprintf("Usage: docker [OPTIONS] COMMAND [arg...]\n -H=[tcp://%s:%d]: tcp://host:port to bind/connect to or unix://path/to/socker to use\n\nA self-sufficient runtime for linux containers.\n\nCommands:\n", DEFAULTHTTPHOST, DEFAULTHTTPPORT)
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for _, command := range [][]string{
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{"attach", "Attach to a running container"},
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{"build", "Build a container from a Dockerfile"},
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{"commit", "Create a new image from a container's changes"},
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{"diff", "Inspect changes on a container's filesystem"},
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{"export", "Stream the contents of a container as a tar archive"},
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{"history", "Show the history of an image"},
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{"images", "List images"},
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{"import", "Create a new filesystem image from the contents of a tarball"},
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{"info", "Display system-wide information"},
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{"insert", "Insert a file in an image"},
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{"inspect", "Return low-level information on a container"},
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{"kill", "Kill a running container"},
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{"login", "Register or Login to the docker registry server"},
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{"logs", "Fetch the logs of a container"},
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{"port", "Lookup the public-facing port which is NAT-ed to PRIVATE_PORT"},
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{"ps", "List containers"},
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{"pull", "Pull an image or a repository from the docker registry server"},
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{"push", "Push an image or a repository to the docker registry server"},
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{"restart", "Restart a running container"},
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{"rm", "Remove a container"},
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{"rmi", "Remove an image"},
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{"run", "Run a command in a new container"},
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{"search", "Search for an image in the docker index"},
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{"start", "Start a stopped container"},
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{"stop", "Stop a running container"},
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{"tag", "Tag an image into a repository"},
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{"version", "Show the docker version information"},
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{"wait", "Block until a container stops, then print its exit code"},
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} {
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help += fmt.Sprintf(" %-10.10s%s\n", command[0], command[1])
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}
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fmt.Fprintf(cli.err, "%s\n", help)
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return nil
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}
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func (cli *DockerCli) CmdInsert(args ...string) error {
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cmd := Subcmd("insert", "IMAGE URL PATH", "Insert a file from URL in the IMAGE at PATH")
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if err := cmd.Parse(args); err != nil {
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return nil
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}
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if cmd.NArg() != 3 {
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cmd.Usage()
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return nil
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}
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v := url.Values{}
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v.Set("url", cmd.Arg(1))
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v.Set("path", cmd.Arg(2))
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if err := cli.stream("POST", "/images/"+cmd.Arg(0)+"/insert?"+v.Encode(), nil, cli.out); err != nil {
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return err
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}
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return nil
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}
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// mkBuildContext returns an archive of an empty context with the contents
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// of `dockerfile` at the path ./Dockerfile
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func mkBuildContext(dockerfile string, files [][2]string) (Archive, error) {
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buf := new(bytes.Buffer)
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tw := tar.NewWriter(buf)
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files = append(files, [2]string{"Dockerfile", dockerfile})
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for _, file := range files {
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name, content := file[0], file[1]
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hdr := &tar.Header{
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Name: name,
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Size: int64(len(content)),
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}
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if err := tw.WriteHeader(hdr); err != nil {
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return nil, err
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}
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if _, err := tw.Write([]byte(content)); err != nil {
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return nil, err
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}
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}
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if err := tw.Close(); err != nil {
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return nil, err
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}
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return buf, nil
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}
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func (cli *DockerCli) CmdBuild(args ...string) error {
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cmd := Subcmd("build", "[OPTIONS] PATH | URL | -", "Build a new container image from the source code at PATH")
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tag := cmd.String("t", "", "Tag to be applied to the resulting image in case of success")
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if err := cmd.Parse(args); err != nil {
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return nil
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}
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if cmd.NArg() != 1 {
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cmd.Usage()
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return nil
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}
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var (
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context Archive
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isRemote bool
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err error
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)
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if cmd.Arg(0) == "-" {
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// As a special case, 'docker build -' will build from an empty context with the
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// contents of stdin as a Dockerfile
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dockerfile, err := ioutil.ReadAll(cli.in)
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if err != nil {
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return err
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}
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context, err = mkBuildContext(string(dockerfile), nil)
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} else if utils.IsURL(cmd.Arg(0)) || utils.IsGIT(cmd.Arg(0)) {
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isRemote = true
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} else {
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context, err = Tar(cmd.Arg(0), Uncompressed)
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}
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var body io.Reader
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// Setup an upload progress bar
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// FIXME: ProgressReader shouldn't be this annoyning to use
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if context != nil {
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sf := utils.NewStreamFormatter(false)
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body = utils.ProgressReader(ioutil.NopCloser(context), 0, cli.err, sf.FormatProgress("Uploading context", "%v bytes%0.0s%0.0s"), sf)
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}
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// Upload the build context
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v := &url.Values{}
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v.Set("t", *tag)
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if isRemote {
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v.Set("remote", cmd.Arg(0))
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}
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req, err := http.NewRequest("POST", fmt.Sprintf("/v%g/build?%s", APIVERSION, v.Encode()), body)
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if err != nil {
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return err
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}
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if context != nil {
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req.Header.Set("Content-Type", "application/tar")
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}
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dial, err := net.Dial(cli.proto, cli.addr)
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if err != nil {
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return err
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}
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clientconn := httputil.NewClientConn(dial, nil)
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resp, err := clientconn.Do(req)
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defer clientconn.Close()
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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// Check for errors
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if resp.StatusCode < 200 || resp.StatusCode >= 400 {
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body, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return err
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}
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if len(body) == 0 {
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return fmt.Errorf("Error: %s", http.StatusText(resp.StatusCode))
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}
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return fmt.Errorf("Error: %s", body)
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}
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// Output the result
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if _, err := io.Copy(cli.out, resp.Body); err != nil {
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return err
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}
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return nil
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}
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// 'docker login': login / register a user to registry service.
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func (cli *DockerCli) CmdLogin(args ...string) error {
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var readStringOnRawTerminal = func(stdin io.Reader, stdout io.Writer, echo bool) string {
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char := make([]byte, 1)
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buffer := make([]byte, 64)
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var i = 0
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for i < len(buffer) {
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n, err := stdin.Read(char)
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if n > 0 {
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if char[0] == '\r' || char[0] == '\n' {
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stdout.Write([]byte{'\r', '\n'})
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break
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} else if char[0] == 127 || char[0] == '\b' {
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if i > 0 {
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if echo {
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stdout.Write([]byte{'\b', ' ', '\b'})
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}
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i--
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}
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} else if !unicode.IsSpace(rune(char[0])) &&
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!unicode.IsControl(rune(char[0])) {
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if echo {
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stdout.Write(char)
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}
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buffer[i] = char[0]
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i++
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}
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}
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if err != nil {
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if err != io.EOF {
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fmt.Fprintf(stdout, "Read error: %v\r\n", err)
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}
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break
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}
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}
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return string(buffer[:i])
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}
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var readAndEchoString = func(stdin io.Reader, stdout io.Writer) string {
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return readStringOnRawTerminal(stdin, stdout, true)
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}
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var readString = func(stdin io.Reader, stdout io.Writer) string {
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return readStringOnRawTerminal(stdin, stdout, false)
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}
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oldState, err := term.SetRawTerminal(cli.terminalFd)
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if err != nil {
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return err
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}
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defer term.RestoreTerminal(cli.terminalFd, oldState)
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cmd := Subcmd("login", "", "Register or Login to the docker registry server")
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if err := cmd.Parse(args); err != nil {
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return nil
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}
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var (
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username string
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password string
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email string
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)
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fmt.Fprintf(cli.out, "Username (%s):", cli.authConfig.Username)
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username = readAndEchoString(cli.in, cli.out)
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if username == "" {
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username = cli.authConfig.Username
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}
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if username != cli.authConfig.Username {
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fmt.Fprintf(cli.out, "Password: ")
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password = readString(cli.in, cli.out)
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if password == "" {
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return fmt.Errorf("Error : Password Required")
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}
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fmt.Fprintf(cli.out, "Email (%s): ", cli.authConfig.Email)
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email = readAndEchoString(cli.in, cli.out)
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if email == "" {
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email = cli.authConfig.Email
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}
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} else {
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password = cli.authConfig.Password
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email = cli.authConfig.Email
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}
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term.RestoreTerminal(cli.terminalFd, oldState)
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cli.authConfig.Username = username
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cli.authConfig.Password = password
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cli.authConfig.Email = email
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body, statusCode, err := cli.call("POST", "/auth", cli.authConfig)
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if statusCode == 401 {
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cli.authConfig.Username = ""
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cli.authConfig.Password = ""
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cli.authConfig.Email = ""
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auth.SaveConfig(cli.authConfig)
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return err
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}
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if err != nil {
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return err
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}
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var out2 APIAuth
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err = json.Unmarshal(body, &out2)
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if err != nil {
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auth.LoadConfig(os.Getenv("HOME"))
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return err
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}
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auth.SaveConfig(cli.authConfig)
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if out2.Status != "" {
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fmt.Fprintf(cli.out, "%s\n", out2.Status)
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}
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return nil
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}
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// 'docker wait': block until a container stops
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func (cli *DockerCli) CmdWait(args ...string) error {
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cmd := Subcmd("wait", "CONTAINER [CONTAINER...]", "Block until a container stops, then print its exit code.")
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if err := cmd.Parse(args); err != nil {
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return nil
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}
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if cmd.NArg() < 1 {
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cmd.Usage()
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return nil
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}
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for _, name := range cmd.Args() {
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body, _, err := cli.call("POST", "/containers/"+name+"/wait", nil)
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if err != nil {
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fmt.Fprintf(cli.err, "%s", err)
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} else {
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var out APIWait
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err = json.Unmarshal(body, &out)
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if err != nil {
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return err
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}
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fmt.Fprintf(cli.out, "%d\n", out.StatusCode)
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}
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}
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return nil
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}
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// 'docker version': show version information
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func (cli *DockerCli) CmdVersion(args ...string) error {
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cmd := Subcmd("version", "", "Show the docker version information.")
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if err := cmd.Parse(args); err != nil {
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return nil
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}
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if cmd.NArg() > 0 {
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cmd.Usage()
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return nil
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}
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body, _, err := cli.call("GET", "/version", nil)
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if err != nil {
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return err
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}
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var out APIVersion
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err = json.Unmarshal(body, &out)
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if err != nil {
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utils.Debugf("Error unmarshal: body: %s, err: %s\n", body, err)
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return err
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}
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fmt.Fprintf(cli.out, "Client version: %s\n", VERSION)
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fmt.Fprintf(cli.out, "Server version: %s\n", out.Version)
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if out.GitCommit != "" {
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fmt.Fprintf(cli.out, "Git commit: %s\n", out.GitCommit)
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}
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if out.GoVersion != "" {
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fmt.Fprintf(cli.out, "Go version: %s\n", out.GoVersion)
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}
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return nil
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}
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|
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// 'docker info': display system-wide information.
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func (cli *DockerCli) CmdInfo(args ...string) error {
|
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cmd := Subcmd("info", "", "Display system-wide information")
|
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if err := cmd.Parse(args); err != nil {
|
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return nil
|
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}
|
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if cmd.NArg() > 0 {
|
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cmd.Usage()
|
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return nil
|
|
}
|
|
|
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body, _, err := cli.call("GET", "/info", nil)
|
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if err != nil {
|
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return err
|
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}
|
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|
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var out APIInfo
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if err := json.Unmarshal(body, &out); err != nil {
|
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return err
|
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}
|
|
|
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fmt.Fprintf(cli.out, "Containers: %d\n", out.Containers)
|
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fmt.Fprintf(cli.out, "Images: %d\n", out.Images)
|
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if out.Debug || os.Getenv("DEBUG") != "" {
|
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fmt.Fprintf(cli.out, "Debug mode (server): %v\n", out.Debug)
|
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fmt.Fprintf(cli.out, "Debug mode (client): %v\n", os.Getenv("DEBUG") != "")
|
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fmt.Fprintf(cli.out, "Fds: %d\n", out.NFd)
|
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fmt.Fprintf(cli.out, "Goroutines: %d\n", out.NGoroutines)
|
|
}
|
|
if !out.MemoryLimit {
|
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fmt.Fprintf(cli.err, "WARNING: No memory limit support\n")
|
|
}
|
|
if !out.SwapLimit {
|
|
fmt.Fprintf(cli.err, "WARNING: No swap limit support\n")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) CmdStop(args ...string) error {
|
|
cmd := Subcmd("stop", "[OPTIONS] CONTAINER [CONTAINER...]", "Stop a running container")
|
|
nSeconds := cmd.Int("t", 10, "wait t seconds before killing the container")
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
if cmd.NArg() < 1 {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
|
|
v := url.Values{}
|
|
v.Set("t", strconv.Itoa(*nSeconds))
|
|
|
|
for _, name := range cmd.Args() {
|
|
_, _, err := cli.call("POST", "/containers/"+name+"/stop?"+v.Encode(), nil)
|
|
if err != nil {
|
|
fmt.Fprintf(cli.err, "%s\n", err)
|
|
} else {
|
|
fmt.Fprintf(cli.out, "%s\n", name)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) CmdRestart(args ...string) error {
|
|
cmd := Subcmd("restart", "[OPTIONS] CONTAINER [CONTAINER...]", "Restart a running container")
|
|
nSeconds := cmd.Int("t", 10, "wait t seconds before killing the container")
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
if cmd.NArg() < 1 {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
|
|
v := url.Values{}
|
|
v.Set("t", strconv.Itoa(*nSeconds))
|
|
|
|
for _, name := range cmd.Args() {
|
|
_, _, err := cli.call("POST", "/containers/"+name+"/restart?"+v.Encode(), nil)
|
|
if err != nil {
|
|
fmt.Fprintf(cli.err, "%s\n", err)
|
|
} else {
|
|
fmt.Fprintf(cli.out, "%s\n", name)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) CmdStart(args ...string) error {
|
|
cmd := Subcmd("start", "CONTAINER [CONTAINER...]", "Restart a stopped container")
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
if cmd.NArg() < 1 {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
|
|
for _, name := range args {
|
|
_, _, err := cli.call("POST", "/containers/"+name+"/start", nil)
|
|
if err != nil {
|
|
fmt.Fprintf(cli.err, "%s\n", err)
|
|
} else {
|
|
fmt.Fprintf(cli.out, "%s\n", name)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) CmdInspect(args ...string) error {
|
|
cmd := Subcmd("inspect", "CONTAINER|IMAGE [CONTAINER|IMAGE...]", "Return low-level information on a container/image")
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
if cmd.NArg() < 1 {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
fmt.Fprintf(cli.out, "[")
|
|
for i, name := range args {
|
|
if i > 0 {
|
|
fmt.Fprintf(cli.out, ",")
|
|
}
|
|
obj, _, err := cli.call("GET", "/containers/"+name+"/json", nil)
|
|
if err != nil {
|
|
obj, _, err = cli.call("GET", "/images/"+name+"/json", nil)
|
|
if err != nil {
|
|
fmt.Fprintf(cli.err, "%s\n", err)
|
|
continue
|
|
}
|
|
}
|
|
|
|
indented := new(bytes.Buffer)
|
|
if err = json.Indent(indented, obj, "", " "); err != nil {
|
|
fmt.Fprintf(cli.err, "%s\n", err)
|
|
continue
|
|
}
|
|
if _, err := io.Copy(cli.out, indented); err != nil {
|
|
fmt.Fprintf(cli.err, "%s\n", err)
|
|
}
|
|
}
|
|
fmt.Fprintf(cli.out, "]")
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) CmdPort(args ...string) error {
|
|
cmd := Subcmd("port", "CONTAINER PRIVATE_PORT", "Lookup the public-facing port which is NAT-ed to PRIVATE_PORT")
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
if cmd.NArg() != 2 {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
|
|
body, _, err := cli.call("GET", "/containers/"+cmd.Arg(0)+"/json", nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
var out Container
|
|
err = json.Unmarshal(body, &out)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if frontend, exists := out.NetworkSettings.PortMapping[cmd.Arg(1)]; exists {
|
|
fmt.Fprintf(cli.out, "%s\n", frontend)
|
|
} else {
|
|
return fmt.Errorf("Error: No private port '%s' allocated on %s", cmd.Arg(1), cmd.Arg(0))
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// 'docker rmi IMAGE' removes all images with the name IMAGE
|
|
func (cli *DockerCli) CmdRmi(args ...string) error {
|
|
cmd := Subcmd("rmi", "IMAGE [IMAGE...]", "Remove an image")
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
if cmd.NArg() < 1 {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
|
|
for _, name := range cmd.Args() {
|
|
body, _, err := cli.call("DELETE", "/images/"+name, nil)
|
|
if err != nil {
|
|
fmt.Fprintf(cli.err, "%s", err)
|
|
} else {
|
|
var outs []APIRmi
|
|
err = json.Unmarshal(body, &outs)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for _, out := range outs {
|
|
if out.Deleted != "" {
|
|
fmt.Fprintf(cli.out, "Deleted: %s\n", out.Deleted)
|
|
} else {
|
|
fmt.Fprintf(cli.out, "Untagged: %s\n", out.Untagged)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) CmdHistory(args ...string) error {
|
|
cmd := Subcmd("history", "IMAGE", "Show the history of an image")
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
if cmd.NArg() != 1 {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
|
|
body, _, err := cli.call("GET", "/images/"+cmd.Arg(0)+"/history", nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
var outs []APIHistory
|
|
err = json.Unmarshal(body, &outs)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
w := tabwriter.NewWriter(cli.out, 20, 1, 3, ' ', 0)
|
|
fmt.Fprintln(w, "ID\tCREATED\tCREATED BY")
|
|
|
|
for _, out := range outs {
|
|
if out.Tags != nil {
|
|
out.ID = out.Tags[0]
|
|
}
|
|
fmt.Fprintf(w, "%s \t%s ago\t%s\n", out.ID, utils.HumanDuration(time.Now().Sub(time.Unix(out.Created, 0))), out.CreatedBy)
|
|
}
|
|
w.Flush()
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) CmdRm(args ...string) error {
|
|
cmd := Subcmd("rm", "[OPTIONS] CONTAINER [CONTAINER...]", "Remove a container")
|
|
v := cmd.Bool("v", false, "Remove the volumes associated to the container")
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
if cmd.NArg() < 1 {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
val := url.Values{}
|
|
if *v {
|
|
val.Set("v", "1")
|
|
}
|
|
for _, name := range cmd.Args() {
|
|
_, _, err := cli.call("DELETE", "/containers/"+name+"?"+val.Encode(), nil)
|
|
if err != nil {
|
|
fmt.Fprintf(cli.err, "%s\n", err)
|
|
} else {
|
|
fmt.Fprintf(cli.out, "%s\n", name)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// 'docker kill NAME' kills a running container
|
|
func (cli *DockerCli) CmdKill(args ...string) error {
|
|
cmd := Subcmd("kill", "CONTAINER [CONTAINER...]", "Kill a running container")
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
if cmd.NArg() < 1 {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
|
|
for _, name := range args {
|
|
_, _, err := cli.call("POST", "/containers/"+name+"/kill", nil)
|
|
if err != nil {
|
|
fmt.Fprintf(cli.err, "%s\n", err)
|
|
} else {
|
|
fmt.Fprintf(cli.out, "%s\n", name)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) CmdImport(args ...string) error {
|
|
cmd := Subcmd("import", "URL|- [REPOSITORY [TAG]]", "Create a new filesystem image from the contents of a tarball")
|
|
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
if cmd.NArg() < 1 {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
src, repository, tag := cmd.Arg(0), cmd.Arg(1), cmd.Arg(2)
|
|
v := url.Values{}
|
|
v.Set("repo", repository)
|
|
v.Set("tag", tag)
|
|
v.Set("fromSrc", src)
|
|
|
|
err := cli.stream("POST", "/images/create?"+v.Encode(), cli.in, cli.out)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) CmdPush(args ...string) error {
|
|
cmd := Subcmd("push", "[OPTION] NAME", "Push an image or a repository to the registry")
|
|
registry := cmd.String("registry", "", "Registry host to push the image to")
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
name := cmd.Arg(0)
|
|
|
|
if name == "" {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
|
|
if err := cli.checkIfLogged(*registry == "", "push"); err != nil {
|
|
return err
|
|
}
|
|
|
|
if *registry == "" {
|
|
// If we're not using a custom registry, we know the restrictions
|
|
// applied to repository names and can warn the user in advance.
|
|
// Custom repositories can have different rules, and we must also
|
|
// allow pushing by image ID.
|
|
if len(strings.SplitN(name, "/", 2)) == 1 {
|
|
return fmt.Errorf("Impossible to push a \"root\" repository. Please rename your repository in <user>/<repo> (ex: %s/%s)", cli.authConfig.Username, name)
|
|
}
|
|
|
|
nameParts := strings.SplitN(name, "/", 2)
|
|
validNamespace := regexp.MustCompile(`^([a-z0-9_]{4,30})$`)
|
|
if !validNamespace.MatchString(nameParts[0]) {
|
|
return fmt.Errorf("Invalid namespace name (%s), only [a-z0-9_] are allowed, size between 4 and 30", nameParts[0])
|
|
}
|
|
validRepo := regexp.MustCompile(`^([a-zA-Z0-9-_.]+)$`)
|
|
if !validRepo.MatchString(nameParts[1]) {
|
|
return fmt.Errorf("Invalid repository name (%s), only [a-zA-Z0-9-_.] are allowed", nameParts[1])
|
|
}
|
|
}
|
|
|
|
buf, err := json.Marshal(cli.authConfig)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
v := url.Values{}
|
|
v.Set("registry", *registry)
|
|
if err := cli.stream("POST", "/images/"+name+"/push?"+v.Encode(), bytes.NewBuffer(buf), cli.out); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) CmdPull(args ...string) error {
|
|
cmd := Subcmd("pull", "NAME", "Pull an image or a repository from the registry")
|
|
tag := cmd.String("t", "", "Download tagged image in repository")
|
|
registry := cmd.String("registry", "", "Registry to download from. Necessary if image is pulled by ID")
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
|
|
if cmd.NArg() != 1 {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
|
|
remote := cmd.Arg(0)
|
|
if strings.Contains(remote, ":") {
|
|
remoteParts := strings.Split(remote, ":")
|
|
tag = &remoteParts[1]
|
|
remote = remoteParts[0]
|
|
}
|
|
|
|
v := url.Values{}
|
|
v.Set("fromImage", remote)
|
|
v.Set("tag", *tag)
|
|
v.Set("registry", *registry)
|
|
|
|
if err := cli.stream("POST", "/images/create?"+v.Encode(), nil, cli.out); err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) CmdImages(args ...string) error {
|
|
cmd := Subcmd("images", "[OPTIONS] [NAME]", "List images")
|
|
quiet := cmd.Bool("q", false, "only show numeric IDs")
|
|
all := cmd.Bool("a", false, "show all images")
|
|
noTrunc := cmd.Bool("notrunc", false, "Don't truncate output")
|
|
flViz := cmd.Bool("viz", false, "output graph in graphviz format")
|
|
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
if cmd.NArg() > 1 {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
|
|
if *flViz {
|
|
body, _, err := cli.call("GET", "/images/viz", false)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
fmt.Fprintf(cli.out, "%s", body)
|
|
} else {
|
|
v := url.Values{}
|
|
if cmd.NArg() == 1 {
|
|
v.Set("filter", cmd.Arg(0))
|
|
}
|
|
if *all {
|
|
v.Set("all", "1")
|
|
}
|
|
|
|
body, _, err := cli.call("GET", "/images/json?"+v.Encode(), nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
var outs []APIImages
|
|
err = json.Unmarshal(body, &outs)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
w := tabwriter.NewWriter(cli.out, 20, 1, 3, ' ', 0)
|
|
if !*quiet {
|
|
fmt.Fprintln(w, "REPOSITORY\tTAG\tID\tCREATED\tSIZE")
|
|
}
|
|
|
|
for _, out := range outs {
|
|
if out.Repository == "" {
|
|
out.Repository = "<none>"
|
|
}
|
|
if out.Tag == "" {
|
|
out.Tag = "<none>"
|
|
}
|
|
|
|
if !*quiet {
|
|
fmt.Fprintf(w, "%s\t%s\t", out.Repository, out.Tag)
|
|
if *noTrunc {
|
|
fmt.Fprintf(w, "%s\t", out.ID)
|
|
} else {
|
|
fmt.Fprintf(w, "%s\t", utils.TruncateID(out.ID))
|
|
}
|
|
fmt.Fprintf(w, "%s ago\t", utils.HumanDuration(time.Now().Sub(time.Unix(out.Created, 0))))
|
|
if out.VirtualSize > 0 {
|
|
fmt.Fprintf(w, "%s (virtual %s)\n", utils.HumanSize(out.Size), utils.HumanSize(out.VirtualSize))
|
|
} else {
|
|
fmt.Fprintf(w, "%s\n", utils.HumanSize(out.Size))
|
|
}
|
|
} else {
|
|
if *noTrunc {
|
|
fmt.Fprintln(w, out.ID)
|
|
} else {
|
|
fmt.Fprintln(w, utils.TruncateID(out.ID))
|
|
}
|
|
}
|
|
}
|
|
|
|
if !*quiet {
|
|
w.Flush()
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) CmdPs(args ...string) error {
|
|
cmd := Subcmd("ps", "[OPTIONS]", "List containers")
|
|
quiet := cmd.Bool("q", false, "Only display numeric IDs")
|
|
size := cmd.Bool("s", false, "Display sizes")
|
|
all := cmd.Bool("a", false, "Show all containers. Only running containers are shown by default.")
|
|
noTrunc := cmd.Bool("notrunc", false, "Don't truncate output")
|
|
nLatest := cmd.Bool("l", false, "Show only the latest created container, include non-running ones.")
|
|
since := cmd.String("sinceId", "", "Show only containers created since Id, include non-running ones.")
|
|
before := cmd.String("beforeId", "", "Show only container created before Id, include non-running ones.")
|
|
last := cmd.Int("n", -1, "Show n last created containers, include non-running ones.")
|
|
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
v := url.Values{}
|
|
if *last == -1 && *nLatest {
|
|
*last = 1
|
|
}
|
|
if *all {
|
|
v.Set("all", "1")
|
|
}
|
|
if *last != -1 {
|
|
v.Set("limit", strconv.Itoa(*last))
|
|
}
|
|
if *since != "" {
|
|
v.Set("since", *since)
|
|
}
|
|
if *before != "" {
|
|
v.Set("before", *before)
|
|
}
|
|
if *size {
|
|
v.Set("size", "1")
|
|
}
|
|
|
|
body, _, err := cli.call("GET", "/containers/json?"+v.Encode(), nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
var outs []APIContainers
|
|
err = json.Unmarshal(body, &outs)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
w := tabwriter.NewWriter(cli.out, 20, 1, 3, ' ', 0)
|
|
if !*quiet {
|
|
fmt.Fprint(w, "ID\tIMAGE\tCOMMAND\tCREATED\tSTATUS\tPORTS")
|
|
if *size {
|
|
fmt.Fprintln(w, "\tSIZE")
|
|
} else {
|
|
fmt.Fprint(w, "\n")
|
|
}
|
|
}
|
|
|
|
for _, out := range outs {
|
|
if !*quiet {
|
|
if *noTrunc {
|
|
fmt.Fprintf(w, "%s\t%s\t%s\t%s ago\t%s\t%s\t", out.ID, out.Image, out.Command, utils.HumanDuration(time.Now().Sub(time.Unix(out.Created, 0))), out.Status, out.Ports)
|
|
} else {
|
|
fmt.Fprintf(w, "%s\t%s\t%s\t%s ago\t%s\t%s\t", utils.TruncateID(out.ID), out.Image, utils.Trunc(out.Command, 20), utils.HumanDuration(time.Now().Sub(time.Unix(out.Created, 0))), out.Status, out.Ports)
|
|
}
|
|
if *size {
|
|
if out.SizeRootFs > 0 {
|
|
fmt.Fprintf(w, "%s (virtual %s)\n", utils.HumanSize(out.SizeRw), utils.HumanSize(out.SizeRootFs))
|
|
} else {
|
|
fmt.Fprintf(w, "%s\n", utils.HumanSize(out.SizeRw))
|
|
}
|
|
} else {
|
|
fmt.Fprint(w, "\n")
|
|
}
|
|
} else {
|
|
if *noTrunc {
|
|
fmt.Fprintln(w, out.ID)
|
|
} else {
|
|
fmt.Fprintln(w, utils.TruncateID(out.ID))
|
|
}
|
|
}
|
|
}
|
|
|
|
if !*quiet {
|
|
w.Flush()
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) CmdCommit(args ...string) error {
|
|
cmd := Subcmd("commit", "[OPTIONS] CONTAINER [REPOSITORY [TAG]]", "Create a new image from a container's changes")
|
|
flComment := cmd.String("m", "", "Commit message")
|
|
flAuthor := cmd.String("author", "", "Author (eg. \"John Hannibal Smith <hannibal@a-team.com>\"")
|
|
flConfig := cmd.String("run", "", "Config automatically applied when the image is run. "+`(ex: {"Cmd": ["cat", "/world"], "PortSpecs": ["22"]}')`)
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
name, repository, tag := cmd.Arg(0), cmd.Arg(1), cmd.Arg(2)
|
|
if name == "" {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
|
|
v := url.Values{}
|
|
v.Set("container", name)
|
|
v.Set("repo", repository)
|
|
v.Set("tag", tag)
|
|
v.Set("comment", *flComment)
|
|
v.Set("author", *flAuthor)
|
|
var config *Config
|
|
if *flConfig != "" {
|
|
config = &Config{}
|
|
if err := json.Unmarshal([]byte(*flConfig), config); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
body, _, err := cli.call("POST", "/commit?"+v.Encode(), config)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
apiID := &APIID{}
|
|
err = json.Unmarshal(body, apiID)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
fmt.Fprintf(cli.out, "%s\n", apiID.ID)
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) CmdExport(args ...string) error {
|
|
cmd := Subcmd("export", "CONTAINER", "Export the contents of a filesystem as a tar archive")
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
|
|
if cmd.NArg() != 1 {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
|
|
if err := cli.stream("GET", "/containers/"+cmd.Arg(0)+"/export", nil, cli.out); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) CmdDiff(args ...string) error {
|
|
cmd := Subcmd("diff", "CONTAINER", "Inspect changes on a container's filesystem")
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
if cmd.NArg() != 1 {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
|
|
body, _, err := cli.call("GET", "/containers/"+cmd.Arg(0)+"/changes", nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
changes := []Change{}
|
|
err = json.Unmarshal(body, &changes)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
for _, change := range changes {
|
|
fmt.Fprintf(cli.out, "%s\n", change.String())
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) CmdLogs(args ...string) error {
|
|
cmd := Subcmd("logs", "CONTAINER", "Fetch the logs of a container")
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
if cmd.NArg() != 1 {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
|
|
if err := cli.hijack("POST", "/containers/"+cmd.Arg(0)+"/attach?logs=1&stdout=1", false, nil, cli.out); err != nil {
|
|
return err
|
|
}
|
|
if err := cli.hijack("POST", "/containers/"+cmd.Arg(0)+"/attach?logs=1&stderr=1", false, nil, cli.err); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) CmdAttach(args ...string) error {
|
|
cmd := Subcmd("attach", "CONTAINER", "Attach to a running container")
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
if cmd.NArg() != 1 {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
|
|
body, _, err := cli.call("GET", "/containers/"+cmd.Arg(0)+"/json", nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
container := &Container{}
|
|
err = json.Unmarshal(body, container)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if !container.State.Running {
|
|
return fmt.Errorf("Impossible to attach to a stopped container, start it first")
|
|
}
|
|
|
|
if container.Config.Tty {
|
|
if err := cli.monitorTtySize(cmd.Arg(0)); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
v := url.Values{}
|
|
v.Set("stream", "1")
|
|
v.Set("stdin", "1")
|
|
v.Set("stdout", "1")
|
|
v.Set("stderr", "1")
|
|
|
|
if err := cli.hijack("POST", "/containers/"+cmd.Arg(0)+"/attach?"+v.Encode(), container.Config.Tty, cli.in, cli.out); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) CmdSearch(args ...string) error {
|
|
cmd := Subcmd("search", "NAME", "Search the docker index for images")
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
if cmd.NArg() != 1 {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
|
|
v := url.Values{}
|
|
v.Set("term", cmd.Arg(0))
|
|
body, _, err := cli.call("GET", "/images/search?"+v.Encode(), nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
outs := []APISearch{}
|
|
err = json.Unmarshal(body, &outs)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
fmt.Fprintf(cli.out, "Found %d results matching your query (\"%s\")\n", len(outs), cmd.Arg(0))
|
|
w := tabwriter.NewWriter(cli.out, 20, 1, 3, ' ', 0)
|
|
fmt.Fprintf(w, "NAME\tDESCRIPTION\n")
|
|
for _, out := range outs {
|
|
desc := strings.Replace(out.Description, "\n", " ", -1)
|
|
desc = strings.Replace(desc, "\r", " ", -1)
|
|
if len(desc) > 45 {
|
|
desc = utils.Trunc(desc, 42) + "..."
|
|
}
|
|
fmt.Fprintf(w, "%s\t%s\n", out.Name, desc)
|
|
}
|
|
w.Flush()
|
|
return nil
|
|
}
|
|
|
|
// Ports type - Used to parse multiple -p flags
|
|
type ports []int
|
|
|
|
// ListOpts type
|
|
type ListOpts []string
|
|
|
|
func (opts *ListOpts) String() string {
|
|
return fmt.Sprint(*opts)
|
|
}
|
|
|
|
func (opts *ListOpts) Set(value string) error {
|
|
*opts = append(*opts, value)
|
|
return nil
|
|
}
|
|
|
|
// AttachOpts stores arguments to 'docker run -a', eg. which streams to attach to
|
|
type AttachOpts map[string]bool
|
|
|
|
func NewAttachOpts() AttachOpts {
|
|
return make(AttachOpts)
|
|
}
|
|
|
|
func (opts AttachOpts) String() string {
|
|
// Cast to underlying map type to avoid infinite recursion
|
|
return fmt.Sprintf("%v", map[string]bool(opts))
|
|
}
|
|
|
|
func (opts AttachOpts) Set(val string) error {
|
|
if val != "stdin" && val != "stdout" && val != "stderr" {
|
|
return fmt.Errorf("Unsupported stream name: %s", val)
|
|
}
|
|
opts[val] = true
|
|
return nil
|
|
}
|
|
|
|
func (opts AttachOpts) Get(val string) bool {
|
|
if res, exists := opts[val]; exists {
|
|
return res
|
|
}
|
|
return false
|
|
}
|
|
|
|
// PathOpts stores a unique set of absolute paths
|
|
type PathOpts map[string]struct{}
|
|
|
|
func NewPathOpts() PathOpts {
|
|
return make(PathOpts)
|
|
}
|
|
|
|
func (opts PathOpts) String() string {
|
|
return fmt.Sprintf("%v", map[string]struct{}(opts))
|
|
}
|
|
|
|
func (opts PathOpts) Set(val string) error {
|
|
if !filepath.IsAbs(val) {
|
|
return fmt.Errorf("%s is not an absolute path", val)
|
|
}
|
|
opts[filepath.Clean(val)] = struct{}{}
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) CmdTag(args ...string) error {
|
|
cmd := Subcmd("tag", "[OPTIONS] IMAGE REPOSITORY [TAG]", "Tag an image into a repository")
|
|
force := cmd.Bool("f", false, "Force")
|
|
if err := cmd.Parse(args); err != nil {
|
|
return nil
|
|
}
|
|
if cmd.NArg() != 2 && cmd.NArg() != 3 {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
|
|
v := url.Values{}
|
|
v.Set("repo", cmd.Arg(1))
|
|
if cmd.NArg() == 3 {
|
|
v.Set("tag", cmd.Arg(2))
|
|
}
|
|
|
|
if *force {
|
|
v.Set("force", "1")
|
|
}
|
|
|
|
if _, _, err := cli.call("POST", "/images/"+cmd.Arg(0)+"/tag?"+v.Encode(), nil); err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) CmdRun(args ...string) error {
|
|
config, hostConfig, cmd, err := ParseRun(args, nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if config.Image == "" {
|
|
cmd.Usage()
|
|
return nil
|
|
}
|
|
|
|
//create the container
|
|
body, statusCode, err := cli.call("POST", "/containers/create", config)
|
|
//if image not found try to pull it
|
|
if statusCode == 404 {
|
|
v := url.Values{}
|
|
v.Set("fromImage", config.Image)
|
|
err = cli.stream("POST", "/images/create?"+v.Encode(), nil, cli.err)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
body, _, err = cli.call("POST", "/containers/create", config)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
runResult := &APIRun{}
|
|
err = json.Unmarshal(body, runResult)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
for _, warning := range runResult.Warnings {
|
|
fmt.Fprintln(cli.err, "WARNING: ", warning)
|
|
}
|
|
|
|
//start the container
|
|
if _, _, err = cli.call("POST", "/containers/"+runResult.ID+"/start", hostConfig); err != nil {
|
|
return err
|
|
}
|
|
|
|
var wait chan struct{}
|
|
|
|
if !config.AttachStdout && !config.AttachStderr {
|
|
// Make this asynchrone in order to let the client write to stdin before having to read the ID
|
|
wait = make(chan struct{})
|
|
go func() {
|
|
defer close(wait)
|
|
fmt.Fprintf(cli.out, "%s\n", runResult.ID)
|
|
}()
|
|
}
|
|
|
|
if config.AttachStdin || config.AttachStdout || config.AttachStderr {
|
|
if config.Tty {
|
|
if err := cli.monitorTtySize(runResult.ID); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
v := url.Values{}
|
|
v.Set("logs", "1")
|
|
v.Set("stream", "1")
|
|
|
|
if config.AttachStdin {
|
|
v.Set("stdin", "1")
|
|
}
|
|
if config.AttachStdout {
|
|
v.Set("stdout", "1")
|
|
}
|
|
if config.AttachStderr {
|
|
v.Set("stderr", "1")
|
|
}
|
|
|
|
if err := cli.hijack("POST", "/containers/"+runResult.ID+"/attach?"+v.Encode(), config.Tty, cli.in, cli.out); err != nil {
|
|
utils.Debugf("Error hijack: %s", err)
|
|
return err
|
|
}
|
|
}
|
|
|
|
if !config.AttachStdout && !config.AttachStderr {
|
|
<-wait
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) checkIfLogged(condition bool, action string) error {
|
|
// If condition AND the login failed
|
|
if condition && cli.authConfig.Username == "" {
|
|
if err := cli.CmdLogin(""); err != nil {
|
|
return err
|
|
}
|
|
if cli.authConfig.Username == "" {
|
|
return fmt.Errorf("Please login prior to %s. ('docker login')", action)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) call(method, path string, data interface{}) ([]byte, int, error) {
|
|
var params io.Reader
|
|
if data != nil {
|
|
buf, err := json.Marshal(data)
|
|
if err != nil {
|
|
return nil, -1, err
|
|
}
|
|
params = bytes.NewBuffer(buf)
|
|
}
|
|
|
|
req, err := http.NewRequest(method, fmt.Sprintf("/v%g%s", APIVERSION, path), params)
|
|
if err != nil {
|
|
return nil, -1, err
|
|
}
|
|
req.Header.Set("User-Agent", "Docker-Client/"+VERSION)
|
|
if data != nil {
|
|
req.Header.Set("Content-Type", "application/json")
|
|
} else if method == "POST" {
|
|
req.Header.Set("Content-Type", "plain/text")
|
|
}
|
|
dial, err := net.Dial(cli.proto, cli.addr)
|
|
if err != nil {
|
|
return nil, -1, err
|
|
}
|
|
clientconn := httputil.NewClientConn(dial, nil)
|
|
resp, err := clientconn.Do(req)
|
|
defer clientconn.Close()
|
|
if err != nil {
|
|
if strings.Contains(err.Error(), "connection refused") {
|
|
return nil, -1, fmt.Errorf("Can't connect to docker daemon. Is 'docker -d' running on this host?")
|
|
}
|
|
return nil, -1, err
|
|
}
|
|
defer resp.Body.Close()
|
|
body, err := ioutil.ReadAll(resp.Body)
|
|
if err != nil {
|
|
return nil, -1, err
|
|
}
|
|
if resp.StatusCode < 200 || resp.StatusCode >= 400 {
|
|
if len(body) == 0 {
|
|
return nil, resp.StatusCode, fmt.Errorf("Error: %s", http.StatusText(resp.StatusCode))
|
|
}
|
|
return nil, resp.StatusCode, fmt.Errorf("Error: %s", body)
|
|
}
|
|
return body, resp.StatusCode, nil
|
|
}
|
|
|
|
func (cli *DockerCli) stream(method, path string, in io.Reader, out io.Writer) error {
|
|
if (method == "POST" || method == "PUT") && in == nil {
|
|
in = bytes.NewReader([]byte{})
|
|
}
|
|
req, err := http.NewRequest(method, fmt.Sprintf("/v%g%s", APIVERSION, path), in)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
req.Header.Set("User-Agent", "Docker-Client/"+VERSION)
|
|
if method == "POST" {
|
|
req.Header.Set("Content-Type", "plain/text")
|
|
}
|
|
dial, err := net.Dial(cli.proto, cli.addr)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
clientconn := httputil.NewClientConn(dial, nil)
|
|
resp, err := clientconn.Do(req)
|
|
defer clientconn.Close()
|
|
if err != nil {
|
|
if strings.Contains(err.Error(), "connection refused") {
|
|
return fmt.Errorf("Can't connect to docker daemon. Is 'docker -d' running on this host?")
|
|
}
|
|
return err
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
if resp.StatusCode < 200 || resp.StatusCode >= 400 {
|
|
body, err := ioutil.ReadAll(resp.Body)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if len(body) == 0 {
|
|
return fmt.Errorf("Error :%s", http.StatusText(resp.StatusCode))
|
|
}
|
|
return fmt.Errorf("Error: %s", body)
|
|
}
|
|
|
|
if resp.Header.Get("Content-Type") == "application/json" {
|
|
dec := json.NewDecoder(resp.Body)
|
|
for {
|
|
var m utils.JSONMessage
|
|
if err := dec.Decode(&m); err == io.EOF {
|
|
break
|
|
} else if err != nil {
|
|
return err
|
|
}
|
|
if m.Progress != "" {
|
|
fmt.Fprintf(out, "%s %s\r", m.Status, m.Progress)
|
|
} else if m.Error != "" {
|
|
return fmt.Errorf(m.Error)
|
|
} else {
|
|
fmt.Fprintf(out, "%s\n", m.Status)
|
|
}
|
|
}
|
|
} else {
|
|
if _, err := io.Copy(out, resp.Body); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (cli *DockerCli) hijack(method, path string, setRawTerminal bool, in io.ReadCloser, out io.Writer) error {
|
|
|
|
req, err := http.NewRequest(method, fmt.Sprintf("/v%g%s", APIVERSION, path), nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
req.Header.Set("User-Agent", "Docker-Client/"+VERSION)
|
|
req.Header.Set("Content-Type", "plain/text")
|
|
|
|
dial, err := net.Dial(cli.proto, cli.addr)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
clientconn := httputil.NewClientConn(dial, nil)
|
|
defer clientconn.Close()
|
|
|
|
// Server hijacks the connection, error 'connection closed' expected
|
|
clientconn.Do(req)
|
|
|
|
rwc, br := clientconn.Hijack()
|
|
defer rwc.Close()
|
|
|
|
receiveStdout := utils.Go(func() error {
|
|
_, err := io.Copy(out, br)
|
|
return err
|
|
})
|
|
|
|
if in != nil && setRawTerminal && cli.isTerminal && os.Getenv("NORAW") == "" {
|
|
oldState, err := term.SetRawTerminal(cli.terminalFd)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer term.RestoreTerminal(cli.terminalFd, oldState)
|
|
}
|
|
|
|
sendStdin := utils.Go(func() error {
|
|
if in != nil {
|
|
io.Copy(rwc, in)
|
|
}
|
|
if tcpc, ok := rwc.(*net.TCPConn); ok {
|
|
if err := tcpc.CloseWrite(); err != nil {
|
|
utils.Debugf("Couldn't send EOF: %s\n", err)
|
|
}
|
|
} else if unixc, ok := rwc.(*net.UnixConn); ok {
|
|
if err := unixc.CloseWrite(); err != nil {
|
|
utils.Debugf("Couldn't send EOF: %s\n", err)
|
|
}
|
|
}
|
|
// Discard errors due to pipe interruption
|
|
return nil
|
|
})
|
|
|
|
if err := <-receiveStdout; err != nil {
|
|
utils.Debugf("Error receiveStdout: %s", err)
|
|
return err
|
|
}
|
|
|
|
if !cli.isTerminal {
|
|
if err := <-sendStdin; err != nil {
|
|
utils.Debugf("Error sendStdin: %s", err)
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
|
|
}
|
|
|
|
func (cli *DockerCli) resizeTty(id string) {
|
|
if !cli.isTerminal {
|
|
return
|
|
}
|
|
ws, err := term.GetWinsize(cli.terminalFd)
|
|
if err != nil {
|
|
utils.Debugf("Error getting size: %s", err)
|
|
}
|
|
v := url.Values{}
|
|
v.Set("h", strconv.Itoa(int(ws.Height)))
|
|
v.Set("w", strconv.Itoa(int(ws.Width)))
|
|
if _, _, err := cli.call("POST", "/containers/"+id+"/resize?"+v.Encode(), nil); err != nil {
|
|
utils.Debugf("Error resize: %s", err)
|
|
}
|
|
}
|
|
|
|
func (cli *DockerCli) monitorTtySize(id string) error {
|
|
if !cli.isTerminal {
|
|
return fmt.Errorf("Impossible to monitor size on non-tty")
|
|
}
|
|
cli.resizeTty(id)
|
|
|
|
c := make(chan os.Signal, 1)
|
|
signal.Notify(c, syscall.SIGWINCH)
|
|
go func() {
|
|
for sig := range c {
|
|
if sig == syscall.SIGWINCH {
|
|
cli.resizeTty(id)
|
|
}
|
|
}
|
|
}()
|
|
return nil
|
|
}
|
|
|
|
func Subcmd(name, signature, description string) *flag.FlagSet {
|
|
flags := flag.NewFlagSet(name, flag.ContinueOnError)
|
|
flags.Usage = func() {
|
|
// FIXME: use custom stdout or return error
|
|
fmt.Fprintf(os.Stdout, "\nUsage: docker %s %s\n\n%s\n\n", name, signature, description)
|
|
flags.PrintDefaults()
|
|
}
|
|
return flags
|
|
}
|
|
|
|
func NewDockerCli(in io.ReadCloser, out, err io.Writer, proto, addr string) *DockerCli {
|
|
var (
|
|
isTerminal bool = false
|
|
terminalFd uintptr
|
|
)
|
|
|
|
if in != nil {
|
|
if file, ok := in.(*os.File); ok {
|
|
terminalFd = file.Fd()
|
|
isTerminal = term.IsTerminal(terminalFd)
|
|
}
|
|
}
|
|
|
|
if err == nil {
|
|
err = out
|
|
}
|
|
|
|
authConfig, _ := auth.LoadConfig(os.Getenv("HOME"))
|
|
return &DockerCli{
|
|
proto: proto,
|
|
addr: addr,
|
|
authConfig: authConfig,
|
|
in: in,
|
|
out: out,
|
|
err: err,
|
|
isTerminal: isTerminal,
|
|
terminalFd: terminalFd,
|
|
}
|
|
}
|
|
|
|
type DockerCli struct {
|
|
proto string
|
|
addr string
|
|
authConfig *auth.AuthConfig
|
|
in io.ReadCloser
|
|
out io.Writer
|
|
err io.Writer
|
|
isTerminal bool
|
|
terminalFd uintptr
|
|
}
|